The true statement (s) for a semiconductor is (are)

Options

A. conductivity is less than conductors and more than non-conductors
B. Its temperature coefficient of resistance is negative
C. It works at absolute zero temperature as an ideal non-conductor
D. In pure state, silicon germanion are called intrinsic semiconductors.

Answer

A, B, C, D

Explanation

Conductivity of semiconductors lie between conductors and insulators temperature coefficient of resistence for semiconductors is negative in pure state Si, Ge are called intrinsic semiconductors.